Why would you have a hard time believing that? The law of Kamma makes such realms almost a necessity and the suttas often speak of brahmas and devas, not to mention petas and asuras. Take what you will from the teachings but, as we have them, they are filled with references to "spiritual realms" (if I have understood your question).

To avoid all evil, to cultivate good, and to cleanse one's mind — this is the teaching of the Buddhas.-Dhp. 183

Thank you for the reply. I recently have been moving away from the ideas of spirits, demons, and gods (Christianity) and when I discovered Buddhism it clicked with me and I began to feel at peace. I was just surprised that the Theravada practice confirmed spiritual realms, I always thought that was more involved in Mahayana Buddhism.

"A silver birdflies over the autumn lake. When it has passed, the lake's surface does not tryto hold on to the image of the bird."

I wouldn't get too hung up n the details. If I were you and I didn't want to bother with such things I would try to practice and concern myself only with developing and strengthening Right View (i.e., that your intentional acts have an ethical dimension with real results) and letting the details come together on their own. May you find peace and lasting happiness!

To avoid all evil, to cultivate good, and to cleanse one's mind — this is the teaching of the Buddhas.-Dhp. 183

Bhikkhus, if you develop and make much this one thing, it invariably leads to weariness, cessation, appeasement, realization and extinction. What is it? It is recollecting the Enlightened One. If this single thing is recollected and made much, it invariably leads to weariness, cessation, appeasement, realization and extinction.Anguttara-Nikaya: Ekanipata: Ekadhammapali: PañhamavaggaVSMVMMWBBTBHTWTBTMy Page

nrose619 wrote:Thank you for the reply. I recently have been moving away from the ideas of spirits, demons, and gods (Christianity) and when I discovered Buddhism it clicked with me and I began to feel at peace. I was just surprised that the Theravada practice confirmed spiritual realms, I always thought that was more involved in Mahayana Buddhism.

I've got some bad news and some good news for you.First the bad:You'll find that Buddhism (including Theravada Buddhism) is filled with superstitions, spirits, other realms, planes of existence, gods, demons, rebirth, miracles, flying monks, talking animals, and karma.But the good news is that none of that really matters, and just like a delicious plate of food with some nasty boiled brussels sprouts on it, you can eat the good stuff and push the brussels sprouts aside or give them to the dog.What really matters is morality, mediation, and the cultivation of wisdom. The 8-fold path.It works just the same.

(okay, it may be easier for the person who does believe all that stuff, as they aren't so much assailed by doubt, and the wackiness does offer convenient solutions to some problems, but still, it works.)

Then, saturated with joy, you will put an end to suffering and stress.SN 9.11

"The serene and peaceful mind is the true epitome of human achievement."-- Ajahn Chah, Living Dhamma

"To reach beyond fear and danger we must sharpen and widen our vision. We have to pierce through the deceptions that lull us into a comfortable complacency, to take a straight look down into the depths of our existence, without turning away uneasily or running after distractions." -- Bhikkhu Bodhi